Update icu4j to 78.1

https://github.com/unicode-org/icu/releases/tag/release-78.1

Author: mjw99

pom.xml

@@ -63,7 +63,7 @@
 		<opsin-inchi.version>${opsin-core.version}</opsin-inchi.version>
 		<xom.version>1.3.9</xom.version>
 		<log4j2.version>2.25.2</log4j2.version>
-		<icu4j.version>77.1</icu4j.version>
+		<icu4j.version>78.1</icu4j.version>
 		<poi.version>5.5.1</poi.version>
 		<opennlp-maxent.version>3.0.3</opennlp-maxent.version>
 		<opennlp-tools.version>2.5.6.1</opennlp-tools.version>